Cyber Resilience

CVE-2021-3671

Medium

Published: 12 October 2021

Published
12 October 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0514 90.1th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-3671 is a medium-severity NULL Pointer Dereference (CWE-476) vulnerability in Samba Samba. Its CVSS base score is 6.5 (Medium).

Operationally, ranked in the top 9.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

A null pointer de-reference was found in the way samba kerberos server handled missing sname in TGS-REQ (Ticket Granting Server - Request). An authenticated user could use this flaw to crash the samba server.

CWE(s)
CWE-476

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

samba
samba
≤ 4.13.12 · 4.14.0 — 4.14.8
debian
debian linux
10.0, 11.0
netapp
management services for element software
all versions
netapp
management services for netapp hci
all versions
netapp
ontap select deploy administration utility
all versions

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References